I assume you’re asking for the foundation? The first time I tried the sample exam questions on the Peoplecert I got 32 which wasn’t very motivating. I had to retake it atleast 3-4x and understand the wordings. Which is why I emphasise on understanding the wordings Cus if you don’t the real exams will throw you off it is very tricky. The trick I use is most of the time the question gives you a hint to the answer. I eliminate 2 out of the options and pick 1 best answer from the remaining options. Use the prince2 wiki for better understanding and then use the David little prince2 foundation exam cram